LINEPULS & LINECOD catalogue 2016 in English

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LINEPULS • LINECOD Technical information www.lika.biz Lika Electronic is everyday committed to expanding its application specific product range. For such reason a variety of products and solutions are dedicated to suit individual industry needs. Here follows a cross-section of encoders tailored to specialized applications. For more information and special requirements please contact Lika Electronic. SMG is the incremental modular encoder specifically designed to sense a variety of ferromagnetic toothed structures which are used as a passive measurement scale with different pitches in both rotary and linear installations such as toothed-wheels and racks. So it is typically intended for speed and position feedback in industrial applications up to 100,000 RPM such as HSC (High Speed Cutting) spindles of lathes and mills, machine tools and CNC machining centres; assembly equipment, industrial robots and manipulators, welding equipment, torque motors and drive systems in general. The sensor is available with different pitches to accommodate several modules (typically M0.3 and M0.5). Standard ferromagnetic wheels and racks with optional module versions can be provided; customized wheels and application solutions with diameters, modules and tooth profiles on request are further available to meet specific requirements. SMG provides either AB digital signals through Push-Pull or Line Driver (with /AB inverted signals) output circuits or sinecosine signals through 1Vpp output circuit. An additional Reference signal is available on request. Gear/tooth sensors SMB UHV is the incremental or absolute encoder suitable for both rotary and linear position feedback in UHV applications where vacuum pressure is as low as 10 -7 torr. SMB UHV is the first encoder encompassing the magnetic technology instead of the customary optical scanning for such use in vacuum chambers. Vacuum encoders The benefits: • appreciable 50% cost reduction; • non-contact, maintenance-free and reliable operation; • complete insensitivity to use under high vacuum; • larger mounting tolerances which prevent the need for further adjustments after installation and set up. Each component and material of SMB UHV has been especially designed and tested for use in vacuum chambers in order to reduce outgassing and contamination: sensing head enclosure and substrate in stainless steel, appropriate surface treatments and coatings, special adhesives, Kapton wires are among the design cares taken to meet the demanding requirements of such critical environment. Because of the use in limited space, also the readhead footprint has been shrunk to a minimum. Typical applications under ultra high vacuum include electronics and semi-conductor industry, pick & place robots & manipulators, biomedical instruments, measuring equipment. 23
LINEPULS Incremental linear encoders Incremental linear encoders An incremental linear encoder uses a readhead fitted with MR magneto-resistive sensors and a magnetic tape to produce square waves signals or sinusoidal signals to output. As the North-South poles positional information encoded on the tape is cyclical, that is relative and ambiguous, this means that you can gather whether the axis is moving and the direction of the movement when the magnetic sensor passes along the tape; yet you cannot have information about its absolute position; for such reason you need a calibration point for measuring reference. Incremental encoders seldom provide only one A output channel (uni-directional pulses). They can be used uniquely when the information on the direction of motion is not required. All Lika encoders are dual channel encoders at least. A channel (uni-directional output) The whole range of Lika incremental encoders provides A and B output channels at least (bi-directional pulses, also referred to as quadrature). A and B channels supply square waves or cosine-sine signals phase-shifted by 90 electrical degrees. Thanks to this signal displacement, we can determine the direction of the motion. In fact when the rising edge of the signal A leads the rising edge of the signal B, the sensor is moving in the standard counting direction; and on the contrary, when the rising edge of the signal B leads the rising edge of the signal A, the sensor is moving in the reverse counting direction. This is right provided that the sensor is mounted properly and according to the installation literature. For further information on mounting and orienting the tape and the sensor please refer to the section ”Mechanical and environmental information” on page 16 and to the section “Orientation” on page 17. In the Figure the digital signals with inverted signals are represented after an interpolation factor 4x. A and B channels (bi-directional output, single ended output) When noisy electrical environment conditions or long cable lengths could lead to unsafe communication, A and B as well as Index and Reference signals should be paired with inverted signals (/AB0, typically referred to as A NOT, B NOT and 0 NOT). They are typically generated by inverting the electrical output (for instance, when A signal goes HIGH, /A signal goes LOW and vice versa). Inverted signals allow pulses to be filtered in order to have clean signals. Noisy pulses (missed or extra pulses) affect both normal and complementary signals in the same way and thus they can be easily detected and trimmed. Inverted signals (complementary or differential outputs) See the Figure: the extra pulse (in red) which affects both channels A and /A can be easily trimmed by the differential receiver to obtain a clean signal. Inverted signals are always available with RS-422 and sine wave output circuits and optionally with Push-Pull circuits (YC order code only). 24
Page 1: Smart encoders & actuators Incremen
Page 4 and 5: An international family company, co
Page 6 and 7: Quality policies at Lika Electronic
Page 8 and 9: LINEPULS • LINECOD Technical info
Page 24 and 25: LINEPULS Output signals Most increm
Page 26 and 27: LINEPULS Output signals SMEx1 linea
Page 28 and 29: LINEPULS Output signals SMI2 Resolu
Page 30 and 31: LINEPULS Output circuits Differenti
Page 32 and 33: LINEPULS LINECOD Cable lenght We hi
Page 34 and 35: LINECOD Output codes The absolute e
Page 36 and 37: LINECOD Absolute output circuits an
Page 38 and 39: LINECOD Absolute output circuits an
Page 40 and 41: LINECOD Additional functions for SS
Page 42 and 43: LINECOD Additional functions for an
Page 44 and 45: LINECOD Output circuits and fieldbu
Page 46 and 47: POSICONTROL IF55 converter series I
Page 48 and 49: LINECOD Output circuits and fieldbu
Page 50 and 51: Index Overview catalogue page 52 LI
Page 52 and 53: LINEPULS • LINECOD incremental &
Page 54 and 55: ROTAPULS • ROTACOD bearingless en
Page 56 and 57: ROTACOD absolute encoders for gener
Page 58 and 59: ROTACOD absolute encoders with fiel
Page 60 and 61: ROTAPULS • ROTACOD encoders with
Page 62 and 63: ROTAPULS • ROTACOD specialty enco
Page 64 and 65: DRIVECOD rotary actuators for forma
Page 66 and 67: POSICONTROL interfaces, gateways &
Page 68 and 69: www.lika.biz MT MTS Order code MT50
Page 70 and 71: www.lika.biz SME51 LKM-1309/5 MT50
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www.lika.biz SME52 LKM-1309/5 • L
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www.lika.biz SME21 LKM-1309/2 MT20
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www.lika.biz SME11 LKM-1309/1 MT10
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www.lika.biz SMS11 • SMS21 LKM-13
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www.lika.biz SMS12 LKM-1309/1 • L
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www.lika.biz SMB2 • SMB5 MT20 •
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www.lika.biz SMI2 • SMI5 MT20 •
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www.lika.biz SMSR MT10 Order code -
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www.lika.biz SMG Toothed-structure
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www.lika.biz SMX2 • SMX5 MT50 •
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www.lika.biz SMK MT50 Order code -
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www.lika.biz SML • SMH MT32 • M
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www.lika.biz SMIG • MTIG Order co
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www.lika.biz SMP MT50 Order code -
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www.lika.biz Series L1 L2 Tape term
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www.lika.biz SMA2 MTA2 Order code -
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www.lika.biz Series L H SMAG - CB s
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www.lika.biz SMAX • SMAZ MTAX •
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LINEPULS • LINECOD Absolute linea
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LINEPULS • LINECOD Accessories Pi
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Notes 121
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Lika Electronic Srl Via S. Lorenzo,
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LINEPULS & LINECOD catalogue 2016 in English

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